select the size
chest girth - measure horizontally on the protruding points around the body.
waist circumference - measure horizontally around the body at waist level in the most narrow place.
The circumference of the hips - measure on the most protruding points thighs and buttocks, while put feet together hip measure in more of them, about 15-20 cm below the waist.
Phone, example 38 000 000 00 00